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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean society for New and Renewable Energy
Journal Basic Information
Journal DOI :
The Korean Society for New and Renewable Energy
Editor in Chief :
Volume & Issues
Volume 2, Issue 4 - Dec 2006
Volume 2, Issue 3 - Sep 2006
Volume 2, Issue 2 - Jun 2006
Volume 2, Issue 1 - Mar 2006
Selecting the target year
Numerical Study on the Dissolution Behavior of
Hydrate for Global Warming Mitigation
Kim, Nam-Jin ; Seo, Hyang-Min ; Chun, Won-Gee ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 4~11
The idea of
sequestration in the ocean is proposed to be an effective mitigation strategy to counteract potential global warming due to the greenhouse effect. Therefore, in the present study, calculations of the dissolution behavior of
hydrate when liquid carbon dioxide is released at 1,000m and 1,500m in depth are performed. The results show the liquid
injected in the ocean becomes
bubble at between 350 m in depth, and the injection from a moving ship is a more effective method of dissolution than through a fixed pipeline. It so also noted that the ultimate plume generated from
bubbles repeats expansion and shrinking due to the peeling from a fixed pipeline.
KARI LSWT Wind Tunnel Test for Wind Turbine (NREL Phase VI 12% Model)
Cho, Tae-Hwan ; Kim, Yang-Won ; Chang, Byeong-Hee ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 12~18
Research for 2MW Wind Turbine Tower Shell Design Optimization
Hong, Hyeok-Soo ; Park, Jin-Il ; Bang, Jo-Hyug ; Ryu, Ji-Yune ; Kim, Doo-Hoon ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 19~26
Tower shell design is very important because tower takes about 20% of overall wind turbine cost. This paper contains procedure of tower analysis and tower shell thickness optimization concept. Some of requirements like eigenfrequency and buckling evaluated by numerical method. But strength and fatigue can be derived by mathematical method simply. Using this procedure, tower shell thickness can be designed without repetition of complicated calculation.
The Establishment of the GIS based Resource Map System for New and Renewable Energy
Yun, Chang-Yeol ; Kim, Kwang-Deuk ; Jeong, Jae-Hyuck ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 27~32
New and renewable energy information becomes one of the greatest issues because of serious environment problems and limited fossil resources. However, There are few system to manage and utilize new and renewable energy information efficiently. Therefore this study establish the GIS based Resource Map System to save and analyze new and renewable energy information about solar energy, wind power, small hydro, biomass, and geothermal. This Resource Map System is composed of the management system, practical system, field system, and Web-service system. This System can provide various spatial analysis tools such as data searching, creating thematic maps, evaluating location requirements for energy facilities.
Thermal Characteristics of Hybrid Solar Receiver using a Solar and Combustion heating
Kang, Myeong-Cheol ; Kim, Jin-Soo ; Kang, Yong-Heack ; Yoon, Hwan-Ki ; Yu, Chang-Kyun ; Lee, Sang-Nam ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 33~38
The Dish/Stirling system with the Stirling engine is currently used to convert solar energy directly to electrical energy. Successful operation of dish/Stirling system is supported by hybrid system, which will allow continuous operation driven by solar and combustion heating. The hybrid Receiver has to be provided with an additional combustion system. The heat pipe receiver and conbustion system were manufactured and tested for thermal characteristics of receiver. Maximum temperature difference along the heat pipe surface is
. Emission measurements showed low NOx values of 28 to 46 ppm and very high CO values of 18 to 201 ppm.
A Feasibility Study of using Mini-dish Systems for Solar Power Generation
Oh, Seung-Jin ; Hyun, Joon-Ho ; Chun, Won-Gee ; Han, Hyun-Joo ; Kim, Jeong-Tai ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 39~45
This paper introduces a preliminary work for the design of a mini-dish cluster system for power generation. Each mini-dish [typically has a 20 to 30 cm in diameter] is designed with a simple parabolic profile concentrating sun light [after the glass glazing cover to avoid dust deposition on the reflector and facilitate cleaning] onto a centrally located small plane[or concave] mirror which is placed on the bottom side of a transparent glass cover. The mirror with a mini-dish concentrator is designed to focus beam radiation onto a focal point before it enters a bundle of optical fibers connected to a remote receiver for power generation. Different options are considered in designing a mini-dish concentrator to maximize its effectiveness for the collection and use of solar energy.
Preparation and characterization of fluorinated poly(arylene ether sulfone) block copolymers for fuel cell applications
Yoo, Min-Chul ; Chang, Bong-Jun ; Kim, Jeong-Hoon ; Lee, Soo-Bok ; Lee, Yong-Taek ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 46~55
Heat and mass transfer characteristics in steam reforming reactor
Lee, Shin-Ku ; Lim, Sung-Kwang ; Bae, Joong-Myeon ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 56~63
In this paper, heat and mass transfer characteristics through experimental and numerical study are extensively investigated in steam reforming reactor under given operating conditions. In order to get simulated data at outlet of the reformer, heterogeneous reactor model is incorporated. As the reaction also takes place in porous media, two medium approach is used to take into account thermally non-equilibrium phenomena between catalyst and bulk gas. From various parametric studies, significance of heat transfer is emphasized in steam reforming reaction.
Electrocatalytic activity of carbon-supported near-surface alloys (NSAs) for electrode reaction of fuel cell
Park, In-Su ; Sung, Yung-Eun ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 64~69
There is a worldwide interest in the development and commercialization of polymer electrolyte membrane fuel cells [PEMFCs] for vehicular and stationary applications. One of the major objectives is the reduction of loaded electrode materials, which is comprise of the Pt-based noble metals. In this paper, a novel chemical strategy is described for the preparation and characterization of carbon-supported and surface-alloys, which were prepared by using a successive reduction process. After preparing Au colloid nanoparticles, the supporting of Au colloid nanoparticles occurred spontaneously in the carbon black-dispersed aqueous solution. Then nano-scaled active materials were formed on the surface of carbon-supported Au nanoparticles. The structural and electrochemical analyses indicate that the active materials were deposited on the surface of Au nanoparticles selectively and that an alloying process occurred during the successive reducing process. The carbon-supported & surface-alloys showed the higher electrocatalytic activity than those of the particle-alloys and commercial one [Johnson-Matthey] for the reaction of methanol and formic acid oxidation. The increased electrocatalytic activity might be attributed to the effective surface structure of surface-alloys, which have a high utilization of active materials for the surface reaction of electrode.
Catalysis of carbon black for hydrogen production by butane decomposition reaction
Yoon, Suk-Hoon ; Han, Gi-Bo ; Park, No-Kuk ; Ryu, Si-Ok ; Yoon, Ki-June ; Han, Gui-Young ; Lee, Tae-Jin ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 70~77
The butane decomposition over the catalyst is an attractive method for the hydrogen production. The objective of the work was investigated the catalysis of carbon black in butane decomposition reaction. The Butane decomposition was performed over carbon black catalyst in a range of
. The butane conversion of thermal decomposition and catalytic decomposition were increased with increasing the reaction temperature The butane conversion of the thermal decomposition was higher than the butane conversion of the catalytic decomposition. Hydrogen and methane were mostly observed in the butane decomposition over
. Especially, the hydrogen yield was steadily increased with raising the reaction temperature, It could be known that the hydrogen yield of the catalytic decomposition was higher than one of the thermal cracking because the hydrogen productivity was improved by the catalyst. The deactivation of the catalyst was not observed in the reactivity test. The surface and crystalline of the fresh and used catalysts were characterized by TEM, BET surface area and XRD analysis, respectively. The fresh carbon black particles had mostly smoothly round-shaped surfaces. In the surface of the carbon black after the reaction, the deposited carbon was formed as the protrusion-shaped carbon and the cone-shaped. The proper peaks of carbon black appeared in XRD analysis.
Three Dimensional Computational Study on Performance and Transport Characteristics of PEMFC by Flow Channel Patterns
Lee, Pil-Hyong ; Cho, Son-An ; Choi, Seong-Hun ; Hwang, Sang-Soon ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 78~85
Selection of flow channel in the separation plate of PEMFC is very important parameter to improve its performance and reduce parasite loss. Flow patterns in the channel have great influence on the transport of hydrogen and air and removal of water generated from electrochemical reaction in diffusion layer. In this study. fluid flow in flow channel with parallel and interdigitated patterns are simulated three dimensionally on full flow domain including anode and cathode channel together. The numerical results show that the fuel cell with interdigitated flow channel represents better performance than that with parallel flow channel due to its strong convective transport across the gas diffusion layer. But the pressure drop in parallel flow channel is much more than that in interdigitated flow channel. And effects of temperature and stoichiometric number on performance can be calculated and analyzed as well. Nomenclature.
Economic Analysis on VLS-PV System from Sunbelt Region
Choi, Bong-Ha ; Park, Soo-Uk ; Lee, Deok-Ki ; Kim, Seok-Ki ; Song, Jin-Soo ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 86~92
This paper analyses the economics of 50kW PV system installed in Tibet and using domestic technology. We show that this system can be expanded to very large-scale photovoltaic power generation [VLS-PV] system successfully. Based on this result, we conduct the economic analysis of 100MW VLS-PV system designed assuming that it will be installed from 2008 to 2017 in Tibet. In this analysis, future price of PV module and system are estimated based on the methodology of experience curve. In 50kW PV system, the generation cost is calculated at 567.2 won/kWh and this is lower than the one of domestic PV system. In future 100MW VLS-PV system. the generation cost is calculated at 305.4 won/kWh by declining system price. If the lifetime and efficiency of the system goes up, due to future technological improvements, the generation cost can be lowered. Moreover, under the environmental and political effect, VLS-PV system can be as competitive as the conventional energy within 20 years.
A National Strategy for Wind Power Dissemination -Through Analysing Changes and Behaviour of Leading Wind Markets-
Kim, Eun-Il ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 93~101
Quality property of bioethanol blends & counterplan of infrastructure
Jung, Choong-Sub ;
Journal of the Korean society for New and Renewable Energy, volume 2, issue 4, 2006, Pages 102~106